stadter



. in the drum a sucient length of time to the smoke and heated gases,

` dlt-iisd glatte -aiett Gamm,

F. STDTER, or PLATTsMoUfrH, NEBRASKA.

v Letters Patent No. 89,698, cla-'ted lIay 4, 1869. I

sTovEQDRUM'.

. ww The Schedule referred to in these Letters Patent and making part ofthe same.

' Be it knownv that I, F. STDTER, of Platts'month, Cass county,Nebraska, halve invented a new and useful Improvement in Stove-Drums;and I do hereby declare that the following is a full, clear,and exactdescription thereof, which will enable others skilled in theart to makeand use the same, reference being had to the accompanying drawingforming part of this specification. p

v'lhisinvention relates to a new and useful improvev ment Vin drums forradiating heat, and it consists in making the drum in a conical form,and placing therein 'aspiral revolving cone, which is operated by theas' cending current, and stopped, or retarded by a brake,

that the current may be partially arrested and retained part with itsheat, as occasion may require. The' accompanying drawing represents avertical section 'of the drum, with the spiral cone thereon.

A is the drum, which is made conical, or tapering from nearV its lowerend upward, as seen in the drawing.

The lower end may rest on a sto've,'or,the drum may be placed in eousproducts of combustion may pass through, ora current of heatedair fromany source separated from may-be discharged.

B is a vertical shaft, or spindle, which is supported on a step-piece,C, at the bottomv end, and by the cross-piece D at its upper end.

To t e spindle B the spiralE is attached, made taperin to correspondwiththe forniof the drum.- 1h i s spiral is, made of-thin sheet-metal.

i more or less` 4heat will -be radiated from -and gas.

any other position, so that the gasme, this 1st day ofx February, 1869.

As the ascending current of heated air, or gases,

impinges against the inclined under side of' the spiral cone, suiiicientpower is imparted to revolve it. By retarding it, or stopping itentirely,

the flue F, until discharged from the top end. l

G represents a brake, or stop, which acts upon the spiral when pushedinward.

Any other suitable device may be employed for either stopping-vorretarding the motion of the spiral. By this arrangement thecurrentthrough the drum may be made tb travel fast or slow, and consequentlythe drum, according to the temperature required.

By thus controlling the upward current, the heat is utilized, and notallowed to escape up the chimney, while there is ample room for theescape of smoke The advantages of this arrangement are, perfect controlof thel heat generated, and a consequent saving of fuel.

I claim as new, and desire to secure by Letters Patent 4 The conicaldrum A, and spiral cone E on the shaft B,varranged and operatingsubstantially as shown and described for the purposes set forth.

The above specification of my invention, signed by F. STDTER. Witnesses:

WM. L. WELLS,

WM. STADELMAMI.

the heated air, or'- gases, are made to travel arou-nd the spiralthroughl

